package net.lshimokawa.pap6;

public class Calculadora {

	final public int sumar(int a, int b) {
		return a+b;
	}

	final public int restar(int a, int b) {
		return a-b;
	}

	final public int multiplicar(int a, int b) {
		return a*b;
	}

	final public int dividir(int a, int b) {
            if(b==0){
                return -1;
            }else{
                return a/b;
            }
	}
}
